Fluorescent photosensitive glass-ceramics - a novel media for optical data storage

摘要

A fluorosilicate glass-ceramic containing rare earths such as europium (Eu) was realized in order to be used as information 3D optical data storage media. Photosensitive agents: silver (Ag) and cerium (Ce) has been used for obtaining the photosensitivity properties. The material structure and properties were investigated by XRD, SEM, AFM, TEM, confocal microscopy and photoluminescence spectroscopy. The measurements revealed the presence of NaF nanocrystals having dimensions in the range of tens of nanometer. The zones having high nanocrystal population densities present a higher fluorescence. The results suggest that the fluorescent photosensitive glass-ceramics are promising candidates in the class of 3D information storage materials.